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   1 #
   2 # i386/Makefile
   3 #
   4 # This file is included by the global makefile so that you can add your own
   5 # architecture-specific flags and dependencies. Remember to do have actions
   6 # for "archclean" cleaning up for this architecture.
   7 #
   8 # This file is subject to the terms and conditions of the GNU General Public
   9 # License.  See the file "COPYING" in the main directory of this archive
  10 # for more details.
  11 #
  12 # Copyright (C) 1994 by Linus Torvalds
  13 #
  14 # 19990713  Artur Skawina <skawina@geocities.com>
  15 #           Added '-march' and '-mpreferred-stack-boundary' support
  16 #
  17 # 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
  18 #           Added support for GEODE CPU
  19
  20 # Fill in SRCARCH
  21 SRCARCH := x86
  22
  23 HAS_BIARCH      := $(call cc-option-yn, -m32)
  24 ifeq ($(HAS_BIARCH),y)
  25 AS              := $(AS) --32
  26 LD              := $(LD) -m elf_i386
  27 CC              := $(CC) -m32
  28 endif
  29
  30 LDFLAGS         := -m elf_i386
  31 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  32 ifdef CONFIG_RELOCATABLE
  33 LDFLAGS_vmlinux := --emit-relocs
  34 endif
  35 CHECKFLAGS      += -D__i386__
  36
  37 KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
  38
  39 # prevent gcc from keeping the stack 16 byte aligned
  40 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  41
  42 # CPU-specific tuning. Anything which can be shared with UML should go here.
  43 include $(srctree)/arch/i386/Makefile.cpu
  44
  45 # temporary until string.h is fixed
  46 cflags-y += -ffreestanding
  47
  48 # this works around some issues with generating unwind tables in older gccs
  49 # newer gccs do it by default
  50 cflags-y += -maccumulate-outgoing-args
  51
  52 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
  53 # a lot more stack due to the lack of sharing of stacklots:
  54 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
  55
  56 # do binutils support CFI?
  57 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  58 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  59
  60 # is .cfi_signal_frame supported too?
  61 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  62 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  63
  64 KBUILD_CFLAGS += $(cflags-y)
  65
  66 # Default subarch .c files
  67 mcore-y  := arch/x86/mach-default
  68
  69 # Voyager subarch support
  70 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-x86/mach-voyager
  71 mcore-$(CONFIG_X86_VOYAGER)     := arch/x86/mach-voyager
  72
  73 # VISWS subarch support
  74 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-x86/mach-visws
  75 mcore-$(CONFIG_X86_VISWS)       := arch/x86/mach-visws
  76
  77 # NUMAQ subarch support
  78 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-x86/mach-numaq
  79 mcore-$(CONFIG_X86_NUMAQ)       := arch/x86/mach-default
  80
  81 # BIGSMP subarch support
  82 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-x86/mach-bigsmp
  83 mcore-$(CONFIG_X86_BIGSMP)      := arch/x86/mach-default
  84
  85 #Summit subarch support
  86 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
  87 mcore-$(CONFIG_X86_SUMMIT)  := arch/x86/mach-default
  88
  89 # generic subarchitecture
  90 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-x86/mach-generic
  91 mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default
  92 core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
  93
  94 # ES7000 subarch support
  95 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-x86/mach-es7000
  96 mcore-$(CONFIG_X86_ES7000)      := arch/x86/mach-default
  97 core-$(CONFIG_X86_ES7000)       := arch/x86/mach-es7000/
  98
  99 # Xen paravirtualization support
 100 core-$(CONFIG_XEN)              += arch/x86/xen/
 101
 102 # default subarch .h files
 103 mflags-y += -Iinclude/asm-x86/mach-default
 104
 105 head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task_32.o
 106
 107 libs-y                                  += arch/x86/lib/
 108 core-y                                  += arch/x86/kernel/ \
 109                                            arch/x86/mm/ \
 110                                            $(mcore-y)/ \
 111                                            arch/x86/crypto/
 112 drivers-$(CONFIG_MATH_EMULATION)        += arch/x86/math-emu/
 113 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
 114 # must be linked after kernel/
 115 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
 116 drivers-$(CONFIG_PM)                    += arch/x86/power/
 117 drivers-$(CONFIG_FB)                    += arch/x86/video/
 118
 119 KBUILD_CFLAGS += $(mflags-y)
 120 KBUILD_AFLAGS += $(mflags-y)
 121
 122 boot := arch/x86/boot
 123
 124 PHONY += zImage bzImage compressed zlilo bzlilo \
 125          zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
 126
 127 all: bzImage
 128
 129 # KBUILD_IMAGE specify target image being built
 130                     KBUILD_IMAGE := $(boot)/bzImage
 131 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
 132
 133 zImage bzImage: vmlinux
 134         $(Q)mkdir -p $(objtree)/arch/i386/boot
 135         $(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/i386/boot/bzImage
 136         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 137
 138 compressed: zImage
 139
 140 zlilo bzlilo: vmlinux
 141         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 142
 143 zdisk bzdisk: vmlinux
 144         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 145
 146 fdimage fdimage144 fdimage288 isoimage: vmlinux
 147         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 148
 149 install:
 150         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
 151
 152 archclean:
 153         $(Q)rm -rf $(objtree)/arch/i386/boot
 154         $(Q)$(MAKE) $(clean)=arch/x86/boot
 155
 156 define archhelp
 157   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 158   echo  '  install      - Install kernel using'
 159   echo  '                  (your) ~/bin/installkernel or'
 160   echo  '                  (distribution) /sbin/installkernel or'
 161   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 162   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 163   echo  '  fdimage      - Create a boot floppy image'
 164   echo  '  isoimage     - Create a boot CD-ROM image'
 165 endef
 166
 167 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
 168                arch/$(ARCH)/boot/image.iso \
 169                arch/$(ARCH)/boot/mtools.conf